Delhi's air quality index (AQI) remained in the 'poor' category for the fifth consecutive day on Saturday, with a reading of 252 at 9 am. According to the Central Pollution Control Board (CPCB) reading as of 7:56 am, Delhi's Anand Vihar recorded an AQI of 384, which falls under the 'very poor' category. Meanwhile, AQI in Bawana stood at 307.